Signors of one-third to q



(No Model.)

JQ'F. MGNUTT au H. P. GRIMMESBY. FLUE CLEANER.

No. 475,733. Patented May 24, 1892.

D Ilil'A a 'j ll 1 r l I k i if I' 4 a If;

drawings as considerably varied in outline in their equivalent throw as much as possible out to the working i l Unire Strains Patient. @urina JOHN F. MCNUT AND HIRAM F. GRIMMESEY, OFl "WARRN, OHIO, AS- SIGNORS OF ONE-TIIIRD TO O. R. GRIMMESEY, 0F SAME PLACE.

FLUE-CLANEi-i.

L SPECIFICATICNforming part of Letters Patent No. 475,733, dateclll/Iay 24;, 1892..

Application filed August 31,1891. Serial No. 404,219. (No model.)

which is supposed to be equal to the to 'be cleaned, so that To 'aZZ whom it may concern:

Be it known that'we, JOHN F. MCN'U'TT and IIIRAM F. GRIMMESEY, citizens of the United States, residing at lVarren, in the county of Trumbull and State of Ohio, have invented certain new and useful Improvements in Flue- Cleaners; and we do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same.

- Our invention relates to tine-cleaners of the variety having scrapers of one form or another -adaptedto boar against the surface'of the flue and by being turned orworked back and forth remove the scales or deposits in the Hue; and the invention consists in a flue-` cleaner havinglspecially-arranged Wires or mounted on a central rod and constructed, combined, and operating substantially as shown and described, and particularly pointed ,out in the claims.

In the accompanying drawings, forming a part of this specification, Figure l is a plain elevation of a flue-cleaner embodying our invention. Figs. 2 to 5 are crossf-sections of several different styles of wire adapted to be used in our improved cleaner to form the scraping and cleaning ribs.

A represents the central rod, upon which all the other parts are supported, and is designed to have sue'h length as the service requires, or a handle, which will answerthesame purpose.

l; represents the cleaningwires. These wires are shown in thc several ligures of the radius, diameter of the flue flue-surface practically throughout its entire length. In this instance three such Wires or ribs are shown; but the number may be varied and the said ribs or wires are set at such distance apart as to divide equally, so, the space around the rod A, thus giving 'a uniform bearing of the cleaner at all points and doing the most effectual Work. The ends of the wires,'rods, or ribs B are clamped in sectional flanged heads C, sleeved on Aor cote-piece' A and free to" slide within certain fixed limits. Thus on the inner sides the heads Czrest normally against fixed collars c, where they are `held by the pressure of Vthe springs d, surrounding the rod Both of said springs CZ bear against nuts D D. Said nuts may be capable of turning onlthe rod A and taking up or letting out the spring or springs d, as may be required.

The ribs B are of course made ot' elastic metal-such as a suitable quality of steeland they can be held more or `less rigidly at Work by tightening up the springs d. If the cleaner should lit rather too snugly in the flue, the sliding heads are adapted to relieve the pressure on the ribs suiiiciently to operate the cleaner, and lthus relief is accommodated by the tension of the springs z iVithiu the ribs l5 on shaft A are shown a pair of disks F, Which serve to carry out the scraping and afford a support for the ribs, and by Which the ribs are prevented from compressing beyond a certain limit fixed by the diameter of said disks.'

. lV hat We claim, and desire to secure by Letters Patent, isl 1. In a fluec1caner,a central rod having one or more disks thereon, and spiral wires secured at their endson said rod on opposite sides of said disks, substantially as described.

2. In a flue-cleaner, the central rod, nlovable heads on said rod having the cleaningi wires'xed thereon, springs bearing against the outside of said head, and a disk or disks on said rod substantially midway between said heads. as and for the purpose sct forth.

cross-section, and they may have any of the forlns shown or any of the equivalents thereof; but the preferred forms are those which have a fiat surface anda sharp corneror edge to en gage the surface of the flue and to scrape it clean-such forms, for example, as are shown in Figs. l and 5, especially, with the form in Fig. 3 as fairly good. These wires or ribs are arranged spirally, with a compaia tively long bend around the central rod A,

and are so bent at their respective ends as to each wire will bein Working'contact with the or nearly the rod thereon 3. in nflno-olofmo1,a central rod lnwng Witness our hands to the foregoing specixed stops thorcomsldng hoadsbom-ng uox- Mention this 17th day of August, 1891.

molly ngfns 'tho ousido of said stops, and JO1IN\ F. M'CNUT'I.

the oleanngwros scoured in said hoads,i11 HIRAM F. GRU/IMESEY. Qomhnszton with ono on' moro disks mounted Nzl'lossom on sind rod between Said oolhm's and within FRANK S. CIIR'VS'F, 

